Riveting-machine



' v3 Sheets-Sheet 1 S. PRISBIE. 1 RIVBTINGJ; MACHINE,

(No Model.)

No. 501,681. Patented July 1.av 1.8931.

(No Model.)

' S. FRISBIE. 'RI-VBI-NG MAGE 3 SheetsQSheet 2.

INE.

j Naso-1,681. rammed Ju1y18,1a"93 UNITED STATES PATENT OFFICE.

SAMUEL FRISBIE, OF UNIONVILLE, CONNECTICUT.

RIVETlNc-MACHINE.

- SPECIFICATION forming part of Letters Patent No. 501,681, dated July18, 18.93.

Application lcd ISeptember 29, 1892. Serial No. 447.235 (N0 model- Toa/ZZ whom it may concern-.-

Be it known that I, SAMUEL FRIsBIE, of Unionville, in the county ofHartford and State of Connecticut, have invented a new Improvement inRiveting-Machines; and I do hereby declare the following, when taken inconnection with accompanying drawings and the letters of referencemarked thereon, to be This invention relates to an improvement inriveting machines, having speciat reference to machines which areadapted to operate upon several rivets at the same time, the machinebeing designed for riveting that class of measuring-rules in which theedges are bound with metal. The body of the rule is usually of wood,ivory, or similar material, and strips of metal are laid upon the twoedges and rivetsinserted transversely through the body and strips ofmetal, then the rivets upset to secure the two strips of metal to thebody. The rivets'are pieces of wire, of alength greater than thedistance between the two strips to be riveted, so that the wire projectsfrom both sides to give sufficient length to upset upon the twosurfaces. The wire is necessarily of small size, and unless the greatestcare be exercised in riveting, the wire will bend within, and so as tosplit the body. In the manufacture of these rules the loss from suchsplitting is very great, and each rivet is operated upon singly and withgreatest care, so as to make` the loss from such splitting as light aspossible.

The object of this invention is to construct a machine which willoperate simultaneously upon all the rivets throughout the length of thepiece of the rule to be riveted, and to produce the upsetting orriveting in such a manner as will avoid the bending of the wire withinthe body. VIf the blows upon the rivetsbe very light, just sufcient toproduce a slight upsetting of the metal, and these blows continued, thesplitting will not occur. Taking advantage of this fact, the machine ofthis invention is adapted to produce such light blows, and by anautomatic feed to bringthe hammers and the anvil gradually toward eachother, so that each successive blow will produce but a very limitedamount of upsetting, the blows being continued in succession until theupsetting is complete. In such a machine as more fully hereinafterdescribed and particularly recited inthe claims the invention consists.

A, represents the base or'bed of the machine, B B two uprights extendingtherefrom, and which carry a horizontal shaft C, in bearings D D, powerbeing communicated to the shaft through a pulley E, in the usual mannerfor communicating power to power-presses, the machine in its generalconstruction being similar to the common power-press.

F, represents thegate or slide, which is arranged between verticalguides on the uprights, and so as to slide up and down, being so movedby means of an eccentric on the shaft C, connected to the slide by aptman G, in the usual manner for connecting the slide of a power-press,and so that each revolution of the shaft imparts afull reciprocatingmovement to thc slide.

The usual clutch mechanism for connecting the power with the shaft, isemployed, not necessary to be described.

In a head H, carried by the slide F, several hammers I, I, more or lessin number according to the number of rivets required to be operatedupon, are arranged, these hammers being adapted to strike the end of theWire rivets, and upset the end ofthe wire. Below the head H, the anvilJ, is arranged; this anvil is in the form of a fiat table, its surfaceparallel with the line of the facesof the several hammers I. The anvilrests upon a bed K, and is adapted to slide longitudinally thereon fromright to left and return. It is supported between guides L L, see Fig.2, and the under side of the anvil and the upper surface of the bed K,are inclined correspondingly, asseen in Fig. 3, and so that as the anvilJ, is drawn from' right to left, as indicated IOO ' in broken lines Fig.3,9. slight ris@ win be imparted to the anvil. The anvil is moved upthis incline in a step by step or intermittent movement, and suchmovement is best produced from an eccentric M, on the driving-shaft. Theanvil is constructed with an arm N, projecting longitudinally therefrom,and which carries upon its under side a stud or anti-friction roll O.The roll is held in the arm by means of a stud or axle extending througha vertical slot P, in the arm N, and secured by a nut Q, on the upperside, see Figs. 1 and 2, so that the roll orstud may be adjustedlongitudinally in the arm. Below the arm is a transverse slide R,arranged between suitable guides, and so as to receive a backward andforward movement. This slide is provided upon its upper surface with aseries of teeth S, see Fig. 4, and above the slide R, abell-crank leverT, is hung, upon a stationary stud U, one arm of the lever being inconnection with the eccentric M, through a rod V, and so thatateachrevolution ofthe shaft an oscillating movement will be imparted tothe lever. The other arm of the lever carries a pawl W, the nose ofwhich is adapted to engage the teeth S, of the slide R. The pawl ylreceives a backward and forward movement through the lever `T, and sothat in its backward movement` it will escape from one tooth of theslide R, and then in its advance movement, will engage that tooth andimpart a corresponding advance movement to the slide R. The slide R, isprovided with a spring l which operates to return or draw the slide R,rearward, or free from the operation ofthe pawl. A dog Y, is hung upon astationary pivot Z, which is adapted to engage'the teeth of the slide Ras the pawl advances the slide, and so as to hold the slide as it isadvanced step by step under the action of the pawl O n the slide R, is acam a, which presents a straight surface to the stud or anti-frictionroll O, on the arm N, of the anvil, the straight surface of the cambeing oblique to the path of movement of the slide R,l andv so that asthe slide R, is advanced step by step, the oblique vsurface of the cama, will operate upon the anvil and impart to it a corresponding step bystep longitudinal movement. The anvil is provided with a spring b,opposed to the operation of the cam a, and so that when the anvil isfree from the operation of the cam ct, the spring will return the anvilto its normal position, and as seen in Fig. 2, the advance movement ofthe anvil being indicated in broken lines. After the advance of theanvil has been completed, and to permit the anvil and the slide R, toreturn under the action of their respective springs, the slide R, isrelieved from engagement with the pawl W, and the dog Y, which relief isaccomplished through a lever c, hung upon a stationary pivot d, in aplane parallel with the plane of the pawl. The lever c, extends downinto the path of a stop or shoulder e, on the slide R, and so that asthe slide in advancing completes its forward movement, the said stopwill strike the lever c,and turn it forward. From the hub of the leverc, an armf, extends upward, and from the dog Y, a similar arm g, eX-tends upward, the dog being provided with a spring 77 the tendency ofwhich is to hold it down upon the teeth of the slide R. As the slide R,approaches itsadvance movement,

' the stop e, strikes the lever c, and turns it so as to bring the armf,into engagement with the arm g, of the dog Y, which causes the dog Y, torise from its engagement with the teeth of the slide R (as indicated inbroken lines). From the pawl a stud t', projects over the dog Y, as seenin Fig. 5, and so that as the dog rises, it will engage the pawl andcause that to rise with it, so as tol release the slide R, fromengagement with both the dog and the pawl, and when so released, thespring X, will react and return the slide R, and as that slide R, soreturns, the anvil J, will in like manner return under the action of itsspring b. The

. hammers I I, correspond in number and position to the respectiverivets in the body or part of the rule to be operated upon, and normallythe anvil stands in its lowest position, which in this case would be atthe extreme right, as represented in Fig. 3. The Operator havingprepared the part of the rule to be operated upon by placing the stripsor bands thereon, and introducing the wires for the rivets through thebands and the body,

sets the work so prepared upon the anvil, and so as to bring the wiresor rivets directly below the hammers, the opposite ends of the rivetsresting upon the anvil b elow. The machine is now set in motion, and thehammers rapidly reciprocating, come down upon the ends of the wire,producing but a slight force thereon, or not so great as to produce abending effect upon therivets. At each reciprocation of the hammers theanvil is advanced one step, as before described, and in such step itssurface is brought slightly nearer the hammers, so that in the next'descent of the hammers, they will again operate upon the wires toproduce a slight upsetting, and this work will continue, successiveblows being produced by the hammers, and the work gradually raised, anduntil the upsetting of the rivets is complete, and when this work hasbeen completed, the pawl and dog are thrown out, as before described,and the anvil returns, the finished work is removed, and a new pieceintroduced, and so continuing.

The reciprocation of the hammers may be continuous it being unnecessaryto stop the machine when one piece is completed, and start it when thenext is introduced, the au-Y tomatic action of the mechanism to drop theanvil when the work is complete, avoids the necessity ofv disconnectingthe power, but such disconnection may be made if desirable. If the workis continued, however, it is necessary that the next piece of work beintroduced before the anvil commences its rise.

While preferring the inclined plane as the IOO IIO

IZO

means for raising the anvil, it will be evident that other means may beemployed, as for illustration, the anvil may be arranged upon verticalscrews, as seen in Fig. 6, 7c lo, representing the screws, andintermittent rotation is imparted to the screws by any suitablemechanism so as to gradually raisev the anvil, and then the screwsreturned after the work is complete to drop the anvil. rlhisillustration will be suflicient topenable others to apply variousdevices to impart a step by step or intermittent rise to the anvil asthe work progresses, the invention is therefore not to be understood aslimited to any particular mechanism for imparting the verticalintermittent movement to the anvil, so as to cause it to graduallyapproach the hammers;

Vhile preferring to raise the anvil as the means for graduallyshorteningr the distance between the anvil and hammers, according to theextent of upsetting required, the anvil mayv be stationary, and thehammers forced down one step at each operation. This may be accomplishedin various ways as for illustration, as seen in Fig. 7, in which Z,represents the head, m m the several hammers. Longitudinally through thehead is a slide n, against which the upper ends of the hammers rest, theopposite side of the slide inclined in like manner as that described forthe anvil, and so that as the slide is drawn to one side, as representedin broken lines, it will correspondingly force the hammers toward theanvil, and this movement of the slide n, maybe produced at each rise ofthe slide which carries the head, until the upsetting has beencompleted, as before described, then the slide Z, will turn in likemanner as does the anvil in the rst illustration.

From the foregoing it will be understood that the invention is not to belimited to any particular mechanism for causing the hammers and anvil togradually approach each other,it only being essential to the inventionthat there shall be a step bystep advance of one toward the other, andthis step by step or intermittent advance of the anvil toward thehammer, or vice versa, may be employed to advantage in single rivetingmachines where a positive movementis imparted to the hammer.

I am aware that it is not new to move the anvil of a riveting machinetoward the hammer thereof by means of a wedge, and I do not thereforeclaim that construction broadly.

I claiml. In a riveting machine, the combination with one or morereciprocating hammers, and an anvil arranged in opposition thereto, ofstep-by-step mechanism for regularly and intermittently reducing thedistance between the hammer or hammers and the anvil, the said mechanismbeing constructed and a'rranged to operate between the successive blowsof the hammer or hammers,substan tially as set forth, and whereby therivets are operated upon progressively, or little-by 11ttle, instead ofall at once.

42. In a rivetingmachine, thecombination with one or more reciprocatinghammers, and an anvil arranged in opposition thereto, of step-by-stepmechanism for imparting a regular .intermittent movement to the anviltoward the hammer or hammers, the said mechanism being constructed andarranged to operate between the successive blows of the hammer orhammers, substantially as described, and whereby the rivets are operatedupon progressively or little by little, instead of all at once. t

3. In a riveting machine, the combination with one or more reciprocatinghammers, and

an anvil arranged in opposition thereto and havingits lower facelongitudinally inclined, of a bed located below the anvil, and having acorresponding opposite inclination, and step-by-step mechanism forimparting a regular,'intermittent movement to the anvil upon its bed tomove it progressively toward the hammer or hammers, the said mechanismbe-l ing constructed and arranged to operate between the successiveblows of the hammeror hammers, substantially as set forth, and wherebythe rivets are operated upon progressively or little by little, insteadof all at once.

4t. In a riveting machine, the combination of a reciprocating slidecarrying one or more hammers corresponding in number to the rivets to beoperated upon, an anvil below said hammers, and adapted to support thework, the anvil inclined upon its under side from one end toward theother, a bed below the anvil upon which the said inclined surface of theanvil rests, the anvil constructed with an arm projecting from one end,a slide arranged to move in a path at right angles to said arm, the saidslide carrying a cam, and the arm carrying a stud against which said camis ladapted to operate, mechanism substantially such as described forimparting to said slide a step by step or intermittent movement,whichIOC IIO

movement Will be communicated to the anvil slide, and a spring to returnthe anvil after such release, substantially as and for the purposedescribed. y Y In testimony whereof Irhave signed this specification inthe presence of two subscribing witnesses. g

SAMUEL FRISBIE.

Witnesses:

N ELLIS E; DAY, W. E. GRAHAM.

